overreacting?

I just wanna know if I'm overreacting before I go to the hospital. I've been feeling weird since the 9th. I ate something and I got extremely naseaous. so I brushed it off as I ate too much. I threw it back up. After that I was still naseaous but I went to the store and bought some takis and I didn't eat them until the next day. My stomach started burning and I eventually threw them back up. My stomach is still burning. And when I drink anything even water it burns so bad and it feels like it's leaking out of my stomach. and I throw it back up. I've also had cramps like I'm going to start my period and it's due in a couple of weeks but I never cramp this early or spot. And I have the worst headaches ever. I get so dizzy and always naseaous. Is this normal? or should I be concerned?